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2025/7/7 下午 11:14:59
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  • 演講或講座
  • 生物多樣性研究中心
  • 地點

    跨領域科技研究大樓1樓演講廳

  • 演講人姓名

    花田耕介教授 (Kyushu Institute of Technology, Japan)

  • 活動狀態

    確定

  • 活動網址
Lineage-Specifically Emerged Genes in Plant Evolution

2023-04-13 10:00 - 11:00

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Abstract
       During the course of plant evolution, genomes acquire novel genetic elements as sources of functional diversities. Recent advance of next generation sequencing revealed much of lineage-specifically emerged genes such as duplicated genes, de-novo alternative splicing isoforms and de-novo small coding genes in plant genomes. However, lineage-specifically duplicated genes might keep redundant functions with original ones. Also, de-novo alternative splicing isoforms and small genes are expressed as RNA, but the RNA products might be just transcription errors. Therefore, I’m trying to identify lineage-specific genes inducing phenotypic diversities in plants. I mainly used the best model organism of plants (Arabidopsis thaliana) to understand the adaptive evolution throughout lineage-specifically emerged genes. First, I collected various omics data such as transcriptome, proteome, metabolome, interactome, phenome, etc in A. thaliana (Evaluation). Throughout the integration of these omics by bioinformatics analysis, I tried to infer recently emerged genes causing phenotypic changes in evolution (Study & Design). Then, I examined the functional roles of inferred genes by transgenic plants (Construction). This strategy (Evaluation→Study→Design→Construction) is useful to understand the molecular mechanisms of target genes. Here, as sources of phenotypic diversities, I will introduce the evolution of phenotypic variation by three types of newly emerged genes such as gene duplication, alternative splicing isoforms, and small genes.

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